Lantern.



No. 863,872. PATBNTED AUG. 70,1907.Y

A. P. PRAHM.

LANTERN. APPLIUA'TION FILED MAR. z5, 1907.

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No. 863,872. PATBNTBD AUG. 20, 1907.

' A. F. PRAHM.

LANTERN.

APPLIUATION FILED MAB. 25, 1907.

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Vin vertical section of my lantern.

ADOLPH F. PRAHM, OF ST. LOUIS, MISSOURI.

LANTERN.

Specification of Letters Patent.

Patented Aug. 20, 190'?.

Application filed March 25, 1907. Serial No. 364,270.

To all whom it may concern:

Be it known that I, ADoLPH F; PRAHM, a citizen 'of the United States of America, residing' in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Lanterns, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a spiing actuated lifting device for lanterns so constructed that the globe of the lantern is held in lowered position against the action of the lifting springs by means associated with the ventilator tube of the lantern, which when released, permits the lifting action of the springs.

Figure I is a view partly in side elevation and partly Fig. II is a horizontal section taken on line II, II Fig', I. Fig, III is a horizontal section taken on line III, III7 Fig.-I Fig. IV is a vertical section taken through the upper or ventilating members of the lantern. Fig. V is an elevation Aof a modified for in of crank rod that may be used in my lantern.

l designates the font of my lantern, supplied with a vertical burner 2 and surmounted by air tubes 3 that terminate at their upper ends in an ail' chamber 4.

5 is a ventilator tube that is slidably fitted within the air chamber 4 and is surmounted by a hood (i, provided with a central perforation 7.

8 designates the "lobe supporting disk that is adapted to fit the dome of the burner 2 between which and the ventilator tube 5 the globe A is seated.

9 is a guard ring that extends horizontally around the globe A and is mounted in the air tubes 3A B designates a pair of lift springs for service in connection with the globe supporting disk 8. Each of these lift springs comprises a main coil l0 located along side of an air tube 3 an arm ll extending transversely through the air tube and terminating in an upwardly extending arm formed at its extremity with an eye or single coil l2 which is fitted to the guard wire 9 at the side of the air tube opposite to that at which the coil of the spring is located, and also an arm 13 that extends downwardly from the main coil l0 of the spring to a position beneath the rim of the globe supporting disk and then upwardly through an orifice `in the globe supporting disk in the form of a hook.

By the described construction of the lift springs their attachment to the frame members of the lantern, namely, air tribes and the guard ring and the application disk', I` finnish a strong, durable and efficient globe supporting disk lifting means that is adapted to be placed under tension when the globe of the lantern is lowered to the burner of the lantern and one that is therefore always in readiness for globe lifting action when the parts to be hereinafter described and by which the globe is held depressed are released.

14 designates a crank rod rockingly mounted in the air chamber 4 of the lantern through which it extends in a horizontal direction (see Figs, I, II and IV) this rod being provided with a central crank arm or loop l5 located within the ventilator tube 5 and with a `crank handle lG located exteriorly of the air chamber 4.

I7 is a pull-rod loosely connected at its lower or inner end to the crank arm or loop of the crank rod 14 and having its upper or outer end extended through the perforation 7 and the ventilator tube hood G and terminating in a coil 18 that prevents inward movement of the upper end of the pull-rod through said hood. The crank rod by its connection to the hood of the ventilator tube is designed for service in effecting a downward movement of the ventilator tubo within the air chamber 4 and to permit of this movement of the ventilator tube said tube is provided with slots 5 through which the crank rod extends.

It will be readily seen that in the use of my lantern, the globe A is depressed from an elevated position when the crank rod I4 is rotated to effect a. downward pull upon the pull -rod I7 due to said pull-rod uniting the crank rod to the hood of the ventilator tube and the globe being fitted to the lower end of said ventilator tube. As the globe moves downwardly it carries with it the supporting disk S and the arms 13 of the lift springs B are moved downwardly to be in readiness for lifting action when the globe is to be again elevated.

For the purpose of retaining the crank rod 14 in a set position after the globe has been depressed, until it is to be again elevated, I provide a notch 4f in a projecting portion of the air chamber 4 of the lantern and in the path of movement of the crank 1G and into which said crank may enter as seen in' the drawings FigsA II and IV, this notch being preferably produced in a bead 4 at the bottom of the air chamber.

In Fig. V, I have shown a modification of the crank rod, in which said rod, designated by the character 14/ is provided with a solid crank arm 15/ instead of the rod having the crank loop l5 and this solid crank arm contains an eye in which the pull-rod I7 is fitted. I claim:

l. In a lantern, the combination of' a font, a frame sui-mounting said font, a globe supporting disk, a globe on said disk, lift springs secured to said frame and fitted to said disk, a ventilator tube slidably fitted in said frame and engaging said globe, and a crank rod rockably mounted in said frame and having connection with said ventilator; said rod having a crank handle exterior of the lantern frame and said frame being notched t0 receive said crank handle, substantially as set forth.

2. In a lantern, the combination of a font, a frame sul-mountingsaid font, a globe supporting disk, :i globe on said disk, lift springs secured to said frame and fitted 1U to said disk, a ventilator tube slidably Iitted in the upper end of said frame, a crank rod rockably mounted in said frame, and a pull rod uniting said crank rod to the top of said ventilator' tube, substantially as set forth.

v ADOLPH F. PRAHM.

In the presence 0f- LILY ROST, HOWARD G. COOK. 

